I Installed an IBC 15-150 for a customer about 3 months ago. The system is split into 3 injection loops; 1 for the garage in floor (2 zones) 1 for the basement in floor (2 zones) 1 for the domestic (80 gal storage tank with 24v aquastat)
As the homeowner was working in the garage and basement during construction, both in floor loops have been running perfectly for about 6 weeks.
The problem I came across is when I turned up the aquastat to heat the DHW tank, the boiler makes a god-awful vibrating noise. At first I thought maybe I had some air trapped in a loop, but I added an auto airvent and bled the loop again to ensure it was air-free. I also tested the fan by removing the power cable, which simulates the boiler blower running at full speed. The sound IS NOT coming from the blower. I am stumped on this one. When the boiler fires for the in floor call for heat, the firing rate is only about 70 MBH, when it fires for the DHW call, the firing rate is the max 150 MBH
Anyone have any insight?
Thanks
As the homeowner was working in the garage and basement during construction, both in floor loops have been running perfectly for about 6 weeks.
The problem I came across is when I turned up the aquastat to heat the DHW tank, the boiler makes a god-awful vibrating noise. At first I thought maybe I had some air trapped in a loop, but I added an auto airvent and bled the loop again to ensure it was air-free. I also tested the fan by removing the power cable, which simulates the boiler blower running at full speed. The sound IS NOT coming from the blower. I am stumped on this one. When the boiler fires for the in floor call for heat, the firing rate is only about 70 MBH, when it fires for the DHW call, the firing rate is the max 150 MBH
Anyone have any insight?
Thanks
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